Reagan celebrated by Nancy, Beach Boys on 100th

Former first lady Nancy Reagan is helped on stage by Frederick J. Ryan Jr., center, Reagan Foundation Chairman, as Marine Lt. Gen. George J. Flynn looks on after a wreath laying ceremony at the memorial of her husband former U.S. President Ronald Reagan during the centennial birthday celebration at the Ronald Reagan Presidential Library, Sunday, Feb. 6, 2011, in Simi Valley, Calif. (AP Photo/Chris Carlson)

February 6, 2011 8:12:30 PM PST

Associated Press

SIMI VALLEY, Calif. (AP) - February 6, 2011 --

Former first lady Nancy Reagan praised her late husband Sunday, laying a wreath on his grave and singing "Happy Birthday" with the Beach Boys as actors, musicians, former advisers and friends paid tribute to Ronald Reagan on the 100th anniversary of his birth.